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<title>[15983] trunk/wp-includes/meta.php: Add filters to *_metadata() functions.</title>
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<div id="msg">
<dl>
<dt>Revision</dt> <dd><a href="http://trac.wordpress.org/changeset/15983">15983</a></dd>
<dt>Author</dt> <dd>scribu</dd>
<dt>Date</dt> <dd>2010-10-26 19:11:27 +0000 (Tue, 26 Oct 2010)</dd>
</dl>
<h3>Log Message</h3>
<pre>Add filters to *_metadata() functions. Props sc0ttkclark. Fixes <a href="http://trac.wordpress.org/ticket/14766">#14766</a></pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkwpincludesmetaphp">trunk/wp-includes/meta.php</a></li>
</ul>
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<div id="patch">
<h3>Diff</h3>
<a id="trunkwpincludesmetaphp"></a>
<div class="modfile"><h4>Modified: trunk/wp-includes/meta.php (15982 => 15983)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-includes/meta.php 2010-10-26 19:01:55 UTC (rev 15982)
+++ trunk/wp-includes/meta.php 2010-10-26 19:11:27 UTC (rev 15983)
</span><span class="lines">@@ -45,6 +45,10 @@
</span><span class="cx"> // expected_slashed ($meta_key)
</span><span class="cx"> $meta_key = stripslashes($meta_key);
</span><span class="cx">
</span><ins>+ $check = apply_filters( "add_{$meta_type}_metadata", null, $object_id, $meta_key, $meta_value, $unique );
+ if ( null !== $check )
+ return (bool) $check;
+
</ins><span class="cx"> if ( $unique && $wpdb->get_var( $wpdb->prepare(
</span><span class="cx"> "SELECT COUNT(*) FROM $table WHERE meta_key = %s AND $column = %d",
</span><span class="cx"> $meta_key, $object_id ) ) )
</span><span class="lines">@@ -108,6 +112,10 @@
</span><span class="cx"> // expected_slashed ($meta_key)
</span><span class="cx"> $meta_key = stripslashes($meta_key);
</span><span class="cx">
</span><ins>+ $check = apply_filters( "update_{$meta_type}_metadata", null, $object_id, $meta_key, $meta_value, $prev_value );
+ if ( null !== $check )
+ return (bool) $check;
+
</ins><span class="cx"> if ( ! $meta_id = $wpdb->get_var( $wpdb->prepare( "SELECT $id_column FROM $table WHERE meta_key = %s AND $column = %d", $meta_key, $object_id ) ) )
</span><span class="cx"> return add_metadata($meta_type, $object_id, $meta_key, $meta_value);
</span><span class="cx">
</span><span class="lines">@@ -180,6 +188,10 @@
</span><span class="cx"> $meta_key = stripslashes($meta_key);
</span><span class="cx"> $meta_value = maybe_serialize( stripslashes_deep($meta_value) );
</span><span class="cx">
</span><ins>+ $check = apply_filters( "delete_{$meta_type}_metadata", null, $object_id, $meta_key, $meta_value, $delete_all );
+ if ( null !== $check )
+ return (bool) $check;
+
</ins><span class="cx"> $query = $wpdb->prepare( "SELECT $id_column FROM $table WHERE meta_key = %s", $meta_key );
</span><span class="cx">
</span><span class="cx"> if ( !$delete_all )
</span><span class="lines">@@ -231,6 +243,16 @@
</span><span class="cx"> if ( !$object_id = absint($object_id) )
</span><span class="cx"> return false;
</span><span class="cx">
</span><ins>+ $check = apply_filters( "get_{$meta_type}_metadata", null, $object_id, $meta_key, $single );
+ if ( null !== $check ) {
+ if ( !is_array( $check ) )
+ return $check;
+ elseif ( $single )
+ return maybe_unserialize( $check[0] );
+ else
+ return array_map( 'maybe_unserialize', $check );
+ }
+
</ins><span class="cx"> $meta_cache = wp_cache_get($object_id, $meta_type . '_meta');
</span><span class="cx">
</span><span class="cx"> if ( !$meta_cache ) {
</span><span class="lines">@@ -238,7 +260,7 @@
</span><span class="cx"> $meta_cache = wp_cache_get($object_id, $meta_type . '_meta');
</span><span class="cx"> }
</span><span class="cx">
</span><del>- if ( ! $meta_key )
</del><ins>+ if ( !$meta_key )
</ins><span class="cx"> return $meta_cache;
</span><span class="cx">
</span><span class="cx"> if ( isset($meta_cache[$meta_key]) ) {
</span></span></pre>
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